(19)

(11)

EP 0 346 379 A1

(12)

(43) Date of publication: 20.12.1989 Bulletin 1989/51 (21) Application number: 88902254.0 (22) Date of filing: 24.02.1988

(51) International Patent Classification (IPC):  B01D 53/ 44( . ) B01D 8/ 00( . ) B01D 53/ 04( . ) B01D 53/ 74( . ) B01D 5/ 00( . ) B01D 53/ 00( . ) B01D 53/ 26( . ) (86) International application number: PCT/SE1988/000077 (87) International publication number: WO 1988/006481 (07.09.1988 Gazette 1988/20)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 27.02.1987 SE 19870000832 (71) Applicant: INGENJORSFIRMA UTILEX S-781 33 Borlange (SE)	(72) Inventor: UNGERHOLM, Karl-Erik S-781 33 Börlange (SE) (74) Representative: Rehnström, Sven G  Nämndemansvägen 29 S-791 54 Falun S-791 54 Falun (SE)